摘要
流域人类活动对辽河水沙态势变异产生了重要的影响。为了深入探究辽河流域水沙态势的变异特征及其主要影响因素,本文利用了累积曲线法、M-K秩次相关检验分析法就辽河主要干支流1955—2012年水沙态势变化特征进行分析研究。结果表明:水库拦沙、水土保持、河道冲淤与采砂等是引起辽河流域水沙态势变化的主要因素,其中水库拦沙的影响作用最为明显。
Human activity has an important impact on runoff and sediment variation characteristics of Liaohe river. In order to have a thorough understanding of the runoff and sediment variation characteristics of Liaohe river, the paper selected main tributaries of Liaohe river as case study object, and runoff and sediment variation characteristics of Liaohe River Basin during 1955--2012 were analyzed through M-K rank statistical test and the double cumulative curve method. Results shows that reservoir block sand sediment, conservation of soil and water, channel scouring and siltation and sand excavation are the main factors, and reservoir block sand sediment is the most important factor.
关键词
辽河
水沙
变化
因素
水库拦沙
Liaohe river
runoff and sediment
variation
factor
reservoir block sand sediment
